Biogeographic distribution of the eel Anguilla luzonensis: Dependence upon larval duration and oceanic currents

Yu San Han*, Yong Fu Lin, Chau Ron Wu, Yoshiyuki Iizuka, Tersa R. Castillo, Irene U. Yambot, MacMod D. Mamalangkap, Apolinario V. Yambot

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)

摘要

Anguilla luzonensis, a recently identified tropical Anguilla species, was categorized as 'Near Threatened' in the International Union for Conservation of Nature (IUCN) Red List in 2014. However, its biogeographic distribution and dispersal mechanism remain unconfirmed. This study aimed to clarify the biotic and abiotic factors that may shape the eel's dispersal range, which could help to establish suitable conservation strategies. Glass eel distribution was investigated in Taiwan, Luzon, Mindanao, and Sulawesi. A. marmorata was used as a reference eel species for comparison. Although both species were found year-round, A. marmorata was found in all locations and was abundant at most sites. However, A. luzonensis was concentrated only on Luzon Island, mainly between June and October. It was rarely observed in Taiwan and Mindanao, and was not found in Sulawesi. The spawning site of A. luzonensis is probably located more northward in the North Equatorial Current (NEC), whereby the eel larvae avoid entering the Mindanao Current (MC). In addition, A. luzonensis typically spawns between February and May, and is preferentially transported into the Kuroshio from May to August, when the NEC bifurcation latitude reaches its southernmost position and the Kuroshio transport volume peaks. Furthermore, A. luzonensis has a shorter/narrower range of larval duration than A. marmorata, and its dispersal distance is therefore restricted. The life history traits of A. luzonensis, together with the oceanic current regime, may act together to concentrate its biogeographic distribution on Luzon Island.

原文英語
頁(從 - 到)227-238
頁數12
期刊Marine Ecology Progress Series
551
DOIs
出版狀態已發佈 - 2016 六月 9

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 海洋科學
  • 生態學

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